A series LCR AC circuit is at resonance.It contains a resistor of 16 Ω,a capacitor of 0.35 μF,and an inductor of 90 mH.If an effective (rms)voltage of 150 V is applied,what is the effective (rms)current when the circuit is in resonance?
A) 9.4 A
B) 3.3 A
C) 5.0 A
D) 16.1 A

Question

Quizplus · Accepted Answer

At resonance, the inductive and capacitive reactances cancel each other out, leaving only the resistance in the circuit. Therefore, the effective (rms) current is given by:I = V/R = 150 V / 16 Ω = 9.4 A

A Series LCR AC Circuit Is at Resonance